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Assuming that each person makes a shaking partnership just once and no one shakes there own hand,Consider the situation. The eight people are in a line. The first person goes down the line shaking hands with everyone else so he shakes hands 7 times. He then sits down.

The second person shakes hands with everyone left in line, six handshakes, and sits down, He has no need to shake ands with the sitting man as they already shook.

The remainder follow the same procedure, shaking hands with those standing, not shaking with those sitting.

The last man standing shakes with no one as no one is standing and sitsThe sum of hand shakings initiated by each person is 7+6+5+4+3+2+1+0 = 28

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Q: How many handshakes if 8 people shook hands at a party?
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If each OF seven persons in a group shakes hands with each of the other six persons then a total of forty two handshakes occurs?

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